Google maps open street map o google api

Que tal, buen dia Espero podamos trabajar juntos, le dejo algunas dudas que tengo...... Supongo yo que el mapa se mostraria en una pagina de php, esto es correcto ? Como se recibirian los dos parametros de las coordenadas ? Que "tipo" de mapa seria (static map)? Ya cuenta con la API KEY que se utilizaria ? Le dejo el link de las espeficicaciones de los costos de google maps [login to view URL]

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hola ya he realizado proyectos similares a este, seria genial para mi trabajar junto a ti para relizar este proyecto

Puedo haceelo. Cuanto tiempo del proyecto?.....................................................................................